Updated: March 29, 2023
Here are the most watched TV series in South Korea in 2023: TV ratings are based on nationwide viewership data from Nielsen Korea.
| Nationwide Rating | Title | Network | Cast / Creators |
| 28.0% | Three Bold Siblings (2022-23) | KBS2 | Starring: Lee Hana, Lim Ju-hwan, Wang Bit-na, Kim So-eun, Lee Tae-sung Writer: Kim In-yeong Director: Park Man-yeong |
| 20.8% | The Real Has Come! (2023) | KBS2 | Starring: Ahn Jae-hyun, Baek Jin-hee Writer: Jo Jeong-joo Director: Han Joon-seo |
| 19.6% | The Love In Your Eyes (2022-23) | KBS1 | Starring: Baek Sung-Hyun, Bae Noo-ri, Choi Yoon-ra, Jung Su-hwan Writer: Na Seung-hyun Director: Ko Young-tak |
| 17.7% | Taxi Driver 2 (2023) | SBS | Cast: Lee Je-hoon, Kim Eui-sung, Pyo Ye-jin, Jang Hyuk-jin, Bae Yoo-ram Writer: Oh Sang-ho Director: Lee-dan |
| 17.0% | Crash Course In Romance (2023) | tvN | Starring: Jeon Do-yeon, Jung Kyung-ho Writer: Yang Hee-seung Director: Yoo Je-won |
| 16.0% | Agency (2023) | JTBC | Cast: Lee Bo-young, Jo Sung-ha, Son Na-eun, Han Joon-woo, Jeon Hye-jin Writer: Song Soo-han Director: Lee Chang-min |
| 15.7% | Vengeance Of The Bride (2022-23) | KBS2 | Starring: Park Hana, Kang Ji-seub, Park Yoon-Jae, Oh Seung-ah Writer: Song Jeong-rim Director: Park Ki-hyun |
| 14.4% | Apple Of My Eye (2023) | KBS1 | Starring: Seo Jun-young, Yoon Da-young, Song Chae-hwan, Choi Jae-won, Choi Phillip Writer: Baek Eun-jung, Chae Hye-yeong, Yoo Sang-young Director: Choi Ji-yeong |
| 11.5% | Red Balloon (2022-23) | TV Chosun | Starring: Seo Ji-hye, Lee Sung-jae, Hong Soo-hyun, Lee Sang-woo, Lee Bo-hee Writer: Moon Yeong-nam Director: Jin Hyeong-wook |
| 11.4% | Payback (2023) | SBS | Starring: Lee Sun-kyun, Moon Chae-won, Kang Yoo-seok, Park Hoon Written by: Kim Won-seok Directed by: Lee Won-tae |
| 10.4% | Woman In A Veil (2023) | KBS2 | Starring: Shin Go-eun, Choi Yoon-young, Lee Chae-young Writer: Lee Jeong-dae Director: Shin Chang-seok |
| 9.6% | Alchemy Of Souls Part 2 (2022-23) | tvN | Starring: Lee Jae-wook, Go Yoon-jung, Hwang Min-hyun, Arin, Yoo In-soo Writers: Hong Jung-eun and Hong Mi-ran Director: Kim Seong-yoon |
| 7.5% | Divorce Attorney Shin (2023) JTBC | JTBC | Starring: Cho Seung-woo, Han Hye-jin, Kim Sung-kyung, Jung Moon-sung Writer: Yoo Young-ah Director: Lee Jae Hoon |
| 7.4% | Oasis (2023) | KBS2 | Starring: Jang Dong-yoon, Seol In-ah, Choo Young-woo Writer: Jung Hyung-soo Director: Han Hee |
| 7.3% | Game Of Witches (2022-23) | MBC | Starring: Jang Seo-hee, Oh Chang-seok, Kim Kyu-seon, Han Ji-wan, Lee Jung-gil, Yoon Mi-ra Writer: Lee Do-hyeon Director: Lee Hyeong-seon |
Source: Nielsen Korea
KORB 